This and the next patches switches over drivers to gendisk.devfs_name.

Previously gendisk.devfs_name was used only for partitioned devices
or CDroms, and for the latter it was slightly broken.  Fix it to
work genericly for all gendisks.

Replaces devfs_register for block devices.  Note that we do NOT pass in
an operaion vector here - it was unused in devfs_register already
and our block device code fundamentally ties the operations to the
gendisk.  There will be only very few callers of this one anyway..

Already handled by the gendisk layer.

Dasd is partitioned - all devfs stuff is handled by the gendisk layer.

Duh, ubd is partitioned.

Make sure input always uses devfs_remove.  While at it I've also
remove lots of code duplication - every upper input driver contained
the code surrounding devfs_unregister in two identical copies.

- Cleaned up hostinfo usage in all drivers and created a central API to
  handle them all.
- Fixup some spinlock mis-usage.
- Remove devfs_handle mis-usage.
- Cleaned up some heavy handed spinlocking to use mutexes instead.
- Add function to send PHY config packets and use to to settle
  IRM/cycle-master/root descrepancies.

into home.transmeta.com:/home/torvalds/v2.5/linux

If copy_namespace() returns -EPERM, copy_process() will
return a confusing -ENOMEM. Fix it thus.

	new_ns = kmalloc(sizeof(struct namespace *), GFP_KERNEL);
thing wasn't a very good idea.

The rest are whitespace cleanups.

(i) Replace in struct loop_info the dev_t field by __kernel_old_dev_t,
where this type is defined in <asm/posix_types.h>, so that problems
with a differently sized dev_t in userspace are avoided.

(ii) Introduce a new loop_info64, with __u64 device, inode and offset
fields.

This replaces checkboxes by radiobuttons whereever necessary (menu
choices).  It partially fixes the #540 bug report.

into home.transmeta.com:/home/torvalds/v2.5/linux

Second try at the bridge driver module handling cleanup...

1) Eliminate keeping a seperate bridge_list and use a bit on
   the priv_flags structure.  This is equivalent to how the VLAN
   code works. Makes code cleaner and correctly handles cases like
   creating a bridge with the same name as an existing ether device etc.

2) Don't do own module ref counting that is inhernently racy.
   Instead set owner field and cleanup debris on unload.

3) Do last state cleanup in destructor

4) Change of bridge state (dev_open/stop) should use write_lock

5) Make sure timer is not running when cleared.

6) Use "const char *" where possible

o As requested, macros in dn_fib.h changed to decnet specific names
o Two bugs fixed (only in 2.5 decnet stack) relating to bind and connection
  states.
o Numerous style changes: using C99 initialisers and inline rather
  than __inline__
o Use struct flowi as routing key (for forthcoming flow cache)
o Add metrics to routing table
o Many routing table bug fixes
o New wait code to improve efficiency
o We use real device MTUs now rather than saying "hmm... looks like ethernet
  must be 1500" as we used to (still one or two places to fix, but its
  mostly correct in this patch)
o Tidy up in af_decnet.c:dn_sendmsg() in preparation for zerocopy
o Updates to rtnetlink code to return more information
o Removed ioctl() for decnet fib. It never did anything and rtnetlink is
  a far better interface anyway.
o Converted /proc/decnet_neigh to seq_file (other /proc files to follow)
o DECnet route cache now uses RCU like the ipv4 route cache
o Misc bug fixes wherever I found them
o SO_BINDTODEVICE works for outgoing connections